Hyperfine Interactions

, Volume 158, Issue 1–4, pp 389–394 | Cite as

Temperature Dependence of the Quadrupole Interaction for 111In in Sapphire

  • Jakob Penner
  • Reiner Vianden


Perturbed angular correlation measurements of the hyperfine interaction of 111In in sapphire show, that after implantation and annealing at 1000°C, the fraction of undisturbed probe atoms exhibiting a unique quadrupole interaction with ν Q = 219(1) MHz (η = 0) varies between 50% at 4 K, 5% at 100 K and 80% at 973 K in a reversible manner. A possible explanation for this surprising behaviour is the influence of so-called ‘after effects’ following the EC-decay of 111In to 111Cd. Immediately after the decay the 111Cd is in an ionized state, then collects electrons from its surroundings and reaches the ground state. The different electronic configurations that arise during this relaxation process affect the amplitude (f u) and the damping (δ u) of the unique quadrupole interaction.


Quadrupole Interaction Perturb Angular Correlation Probe Nucleus Perturb Angular Correlation Spectrum Angular Correlation Measurement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Schatz G., Weidinger A. and Gardner J. A., Nuclear Condensed Matter Physics. Wiley, Chichester, 1996.Google Scholar
  2. 2.
    Lupascu D., Habenicht S., Lieb K. P., Neubauer M., Uhrmacher M. and Wenzel T., Phys. Rev., B 54 (1996), 871.CrossRefADSGoogle Scholar
  3. 3.
    Mott N. F. and Davis E. A., Electronic Processes in Non-crystalline Materials. Oxford University Press, New York, 1979.Google Scholar
  4. 4.
    Kehr K. W., Hyperfine Interact. 17-19 (1984), 63.CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  1. 1.Helmholtz - Institut für Strahlen- und KernphysikUniversität BonnBonnGermany

Personalised recommendations